1 School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia 2 State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology and Kunming Primate Research Centre, Chinese Academy of Sciences, Kunming 650223, China 3 Stone Age Institute, 1392 W. Dittemore Road, Gosport, IN 47433, USA 4School of Archaeology, Classics a...

INTRODUCTION Here we report an unusual case of massive stone formation in augmented urinary bladder. CASE PRESENTATION A 25-year-old man presented with recurrent urinary tract infection ten years after augmentation cystoplasty after a complex pelvic fracture urethral distraction defect. On evaluation by ultrasonography, X-ray, and computed tomography of abdomen showed large burden of stones i...

Using ab initio spin-density-functional calculations, we investigate the electronic and magnetic structures of a C60 fullerene during a structural transition to a nanotube segment by a series of Stone-Wales transformations. We find that partly opened intermediate cage structures may acquire a magnetic moment of several Bohr magnetons. Our results offer a possible explanation for the ferromagnet...

Theoretical calculations on undefected nanoscale materials predict impressive mechanical properties. In this review we summarize the status of experimental efforts to directly measure the fracture strengths of inorganic and carbon nanotubes and discuss possible explanations for the deviations between the predicted and observed values. We also summarize the role of theory in understanding the mo...

Several cases of recurrent stone formation caused by a surgical material as a nidus have been reported. Recently, we experienced one case in which a migrated metal stent might have been served as a nidus for common duct stone formation. The diagnosis was confirmed by ERCP, the stone was successfully removed with endoscopic therapy. Six years ago, she had undergone a lithotripsy using a percutan...

A62-years old female patient presented to another hospital with complaints of nausea, vomiting and upper right quadrant pain since one week, and abdominal ultrasonography revealed that intrahepatic bile ducts and the common bile duct were dilated. Magnetic resonance cholangiopancreatography was performed at the same hospital and a filling defect of 8.5 mm was noted at the mid level of common bi...

Carbon nanotube (CNT) reinforced metal matrix composites (MMCs) are gaining the attention of researchers because their demand in space and automobile industries for having low weight high mechanical properties. Iron is most used all engineering fields. Therefore, reinforcing iron with CNT can reduce its required amount, which might have a positive economic impact due to reduced cost production....